After his failure to sign Wayne Rooney last summer, Mourinho will be looking to add more quality at the end of the season. It was reported he may return for a bid for Rooney, per ESPN, but that idea seems to have changed, a wise decision by the "Special One."

Rooney has had his fair share of injury problems this season, and United will not let him leave for cheap—and that to an immediate rival.

Jon Super/Associated Press

It was mooted the Juan Mata deal might act as a precursor for an eventual move for Rooney in the summer, but United will command a high fee for their England international.

This means Mourinho now has the option of signing some of Europe's greatest striking talents.

Scott Heppell/Associated Press

Chelsea made a third bid for Rooney in January which was rejected. Going forward, Chelsea need to stop wasting their time on the United striker and having identified three world class targets, Mourinho can now build for the future.

Despite Rooney having all the experience of having played in the Premier League, he hasn't been on his best form this season struggling in a United team languishing in seventh.

Mourinho has been public about Chelsea’s striking problems. He even acknowledged his strikers haven’t come up with the goods and signing either Costa, Mandzukic or Cavani could be the solution. After the defeat to Stoke in December, Mourinho said, per the Guardian’s SachinNakrani:

If you tell me [Sergio] Agüero has scored 10 or 12 goals, [Wayne] Rooney eight or 10, [Oliver] Giroud eight or 10, [Daniel] Sturridge eight or 10, [Luis] Suárez 10 or 12, and ask if I would like my strikers to score eight, 10, 12 goals, then yes, I would. If they had we would be top of the league. That's the reality.

The Chelsea manager has recently been talking about building a new Chelsea team and signing Rooney wouldn't fit with that long-term plan.

We can win it if they lose it. Arsenal are working for many, many years for the evolution of their team. What we are doing this season is what Arsenal have been building to for years. We are there, but are not favourites. We are preparing the team to be one of the favourites next season and this is a very important step.

For Chelsea to be considered favourites they need will need to make some marquee signings to send a message around the Premiership and Europe.

Diego Costa

Paul White/Associated Press

Chelsea already know they will have to wait for at least another year before they can sign Atletico Madrid hitman Diego Costa, says their Sporting Director, reports Dermot Corrigan for ESPN.

The Brazilian-born Spanish international has been in fine form, which has propelled Atletico Madrid to the top of La Liga. Costa has scored 20 goals in 22 games, per ESPN, and is one of Europe's hottest strikers.

HUGE: The Times reports that Chelsea have opened talks with Atletico Madrid about buying Diego Costa in the summer. pic.twitter.com/6TcxSqfdGi

According to Jones, Cavani's representatives are in London as the striker is considering a summer move away from Paris Saint-Germain, with Manchester United joining Chelsea for his signature.

Cavani has scored 28 goals in all competitions this season, per ESPN stats and is increasingly frustrated at playing second fiddle to ZlatanIbrahimovic at the French Ligue 1 champions. PSG manager Laurent Blanc plays him on either wing, but under Mourinho he'll be the main striker.

Mario Mandzukic

Frank Augstein/Associated Press

The Croatian striker has recently fallen out of favour with Bayern coach Pep Guardiola, reported the Daily Mirror, after Guardiola was angered by his poor training performances.

This being the case, Chelsea should signal their interest in signing the former Wolfsburg forward.

He has scored 17 goals in 28 appearances in all competitions, per ESPN, and is widely regarded around Europe.

Mandzukic's position at Bayern will be under scrutiny now that Poland striker Robert Lewandowski is arriving at the Allianz Arena in the summer.

RavinSampat is a B/R Breaking News Writer. You can find his B/R archive here and follow him @_Sampat.